Polymers
n. 聚合物；高分子（polymer的复数）
🗣️ 情景例句
I was deeply impressed by his speech.
他的演讲给我留下深刻的印象。
It's a worthwhile cause.
这是值得为之奋斗的事业。
These objects, however, were different.
这些展品却使人大开眼界。